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biodegradability test Applications

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    Oxygen monitoring from aerobic and anaerobic for biodegradation tests

    Biodegradation tests involve testing samples in response to various parameters: dilution, nutrient addition, pH, temperature, and others. The pattern of oxygen uptake in aerobic tests; nitrogen gas production in anoxic denitrification tests; methane production in methanogenic tests; hydrogen production during glycolysis; and carbon dioxide production during fermentation reactions gives a measure of the rate and extent of biodegradation of the organic constituents of the test sample.

    By Respirometer Systems and Applications, LLC based in Springdale, ARKANSAS (USA).

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    Oxygen Monitoring from Aerobic and Anaerobic for determination of biodegradation kinetics by respirometry

    Intrinsic kinetic tests involve adding relatively high concentrations of organic substrate to small concentration of acclimated microorganisms so that the COD/VSS ratio typically is greater than 10. Kinetic parameters are then determined by non-linear modeling using well-known relationships between biological growth and oxygen uptake.

    By Respirometer Systems and Applications, LLC based in Springdale, ARKANSAS (USA).

  • Respirometer Applications

    Measurement of the aerobic biodegradability of plastic materials (US Standard ASTM D5338, European Standard ISO 14855)

    By ECHO d.o.o. based in Slovenske Konjice, SLOVENIA.

  • Waste water respirometry solutions for toxicity testing

    If industrial wastewater entering a treatment works contains toxic components the rate of biodegradation will be inhibited or stop completely. This can result in failed consents and will certainly give rise to operational problems. Visible indications include deflocculation, bulking and the appearance of filamentous bacteria. Sometimes, there are no visible effects. When the sludge bacteria are inhibited, there is the possibility of toxicity carryover in the effluent that is discharged to receiving waters. With new environmental legislation being introduced, worldwide, to protect the natural environment, toxin discharge is now a serious concern for treatment plant managers.

    By Strathkelvin Instruments Ltd. based in Motherwell, UNITED KINGDOM.

  • Disposable soil headspace testing container

    The OVT container is an innovative product and a highly effective tool for the preliminary testing of media/soils that have been impacted by a wide variety of volatile organic contaminants of concern (COC’s). • No preparation or modification needed prior to use in field • Air tight OVT lid has built in sealed sampling ports of varying sizes to accommodate different size OVA probes. • Lids snap together so all samples from one well/boring can be easily grouped together. • Reduced potential for injury to employees due to non-breakable material, lighter carrying weight and no sharp cutting edges as on aluminum foil boxes or use of razor knives; • Lid is recyclable & container is made from an environmentally friendly biodegradable material (corn-based) ; • Disposable container reduces potential for cross-contamination of samples (creating invalid data) due to washing and reusing mason jars from multiple sites; • The OVT cell can be purchased on-line and shipped directly to your office or obtained at a local equipment rental location. • Granted a USPTO patent and accepted by the Florida Department of Environmental Protection-BPSS as an Innovative Technology.

    By OVT Environmental Products based in Cape Coral, FLORIDA (USA).

  • Membrane filtration systems for biotechnology and pharmaceutical industry

    GEA Filtration is experienced in processing a wide range of products on a commercial basis and by testing products at the plant site or in our pilot plant testing facility. Definition of the Industrial Biotech and Environmental Biotech Sector. This sector uses living organisms to manufacture a variety of products that result in the reduction of pollution, resource consumption and waste. Typical products include bioethanol, industrial enzymes, biological fuel cells, enzymes for bioremediation, biodegradable plastics and much more.

    By GEA Filtration based in Hudson, WISCONSIN (USA).

  • Waste water respirometry solutions for toxicity based consents

    Water companies, water authorities or publicly-owned treatment works (POTW) need to have some knowledge of the composition of the wastes they it receive. In addition to testing for ammonia and BOD or COD levels, treatment works can license industrial discharges on the basis of concentrations of some of the known toxic compounds. However, it is recognised that very many non-regulated toxic materials still enter the treatment works and reduce the efficiency of biodegradation, and may cause toxic shock. The way is now open for more widespread use of direct toxicity tests as a basis for toxicity-based consents. Samples of the industrial effluent are collected at source, for testing on the actual bacteria of the receiving activated sludge. The tests used are the Respiration Inhibition Test and the Nitrification Inhibition Test. Note that this approach mirrors that of the regulators of discharges to receiving waters, who are now using direct toxicity tests (DTA) or whole effluent toxicity tests (WET tests) in order to protect the receiving environment.

    By Strathkelvin Instruments Ltd. based in Motherwell, UNITED KINGDOM.

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